I wanted to order an Ateca last month but the dealership terrified me with the delivery times, they told me not to expect it this year
But this was the case with every dealership and car makers not just SEAT. The worst case was for the Tiguan, they told me to expect May '19 . Skoda was saying up to 40 weeks.
So ended up buying my Ateca from stock. Its not exactly what I wanted but its close, so I'm very happy with it, can enjoy the sunroof during the summer